Extruding machine



June 9, 1925.

O. D. HOLLENBECK EXTRUDING MACHINE Filed Sept. 17, 1925 g'rwenfo'c 05%Q HOZL Q/BL'CK L Manon Patented June 9, 1925.

UNITED STATES OSCAR D. HOLLENBEGK,

OF R-ACINE, WISCONSIN,

EXTRUDING MACHINE.

Application filed September ,17, 1923. Serial No. 663,026.-

To all whom it may concern."

Be it known that I, OSCAR D. Home);- BECK, a citizen of the United States, residing at Racine, in the county of- Racine, State of Wisconsin, have invented certain new and useful Improvements in Extruding Machines, of which the following is a specification. I

This invention relates to extruding machines and particularly to that type of machine adapted for the tubing of rubber.

In machines of the type referred to, the dies whichare used for rubber, extruding purposes are carried upon mmovable heads attached to the body of the machine and having an internal passage which communicates with the central chamber'of. the machine. The dies are generally heated in any approved manner sothat the rubber will be warmed sufiicientlyto be plastic and readily assume the shape of the die.

. In the use of the tubing machine it is frequently necessary to remove the head for various purposes, such as to change the dies and toclean out the central chamber or barrel of the machine.

Heretofore, great difficulty has been experienced in tne removal of the machine head due to the presence of, a homogenous mass of stock within the passageway of the head which strongly resists any turning or twisting movement on the part of the head.

A general object of the invention is to remedy the disadvantages mentioned above by a novel construction and arrangement of partswhichcooperate to fascilitate the removal of the machine head. Y

This and other features ofthe invention will appear from the following description read in connection with the accompanying drawings andWill be particularly pointed ont in the appended claims. 1

Referring to the drawings, Figure 1 is a front-elevatioraof a machine selected to illustrate the invention and Figure2 s a-"vertlcal section on the line 2.2 of Figure 1.

The general features of the type of extruding machine herein shown are of standard construction: Only such portions of the illustrative machine,- therefore, as are intimately related to the novel features of this invention will be described herein in T detail, and for further information as to' the details of construction of the machine, reference may be made to any of the standard and well known machines.-

In its general aspects, the machine includes a baser2 on which are mounted vertical standards 4. Upon the standards is supported a tubular casing 6 which constitutes the'main body portion of the machine. The casing 6 is provided with a central chamber or bore 8 into which the stock is fed through openings 9 communicating with each end of the central chamber. The stock is forced toward the center of the chamber by the usual feed screws 10 which are driven by means ofgears 11 and 12 mounted upon the outer ends of the screw shafts. Iinions 14 and 16 carried by a horizontal shaft 18 are arranged to mesh with gearsll and 12 respectively. The shaft 18 is driven from any convenient source of power.

A passageway 20 is formed in one side of the casing 6 and substantiallymidway between the ends thereof. Surrounding the passageway, the casing is provided with a circular flange 22, the inner surface of which is threaded to engage a removable head 24 having a die 26 upon the outer end thereof. The head 24 is provided with a central passage 28, the inner end of which communicates with the chamber 8 and the outer end with the die passage.

In the operation of the machine the stock is forced through the chamber by the feed screws and passes out of the die which gives to the stock the desired shape.

The above mentioned general features of the construction and operation of the machine diifer in no essential respect from the construction and operation of extruding machines of this type'heretofore in use, and

- require no further description. It is to the erably shrunk upon the head, but may be secured thereto in any desirable manner. The number of teeth on'the gear ring 30 and,

the size of the ring "depend upon the sizeand construction of the. tube machine head.

fifth the number of teeth of the ring gear 30 is mounted below the head 24 and adapted- A pinion 32 having approximately one to mesh with the ring gear. The p' 'on 32 is keyed to a horizontal shaft 34 sidably mounted in bearings 36 and 38 formed upon the upper ends of brackets 40 and 42 respec tively. Upon the rear end of the shaft 34 is mounted a capstan head 44 provided with recesses 46 for the reception of any. suitable tool or bar, by means of which the shaft 34 is rotated.

By the steady, continuous rotation of the capstan 44, the head 24 is slowly turned a ing a passageway leading therefrom, a removable die head. threaded into the passageway, and means for removing said head from said passageway, said means including a gear on the head, a pinion meshed therewith and means for rotating the pinion,

said pinion being adapted to mesh with said gear throughout the movement of said head outof said passageway.

2'. In a extrudln machine, a casing provided with a centra chamber and a passageway in the side thereof communicating with the chamber, a head removably secured in said passageway, a ring gear secured to the periphery of the head, a pinion meshing with the ring gear, and means for rotating the pinion, the said means being mounted for movement longitudinally of the head.

3. In an extruding machine, a casing having a central chamber and a side passageway communicating with. the chamber, a head removably mounted in said passageway, and means for turning the head, said means including a ring gear secured to the head, a horizontal shaft slidably "and rotatably mounted below the head, a pinion keyed to saidshaft adaptedto mesh with the ring gear, and means on said shaft by which the shaft is rotated.

OSCAR D.- HOLLENBEOK. 

